55998221184 has 80 divisors (see below), whose sum is σ = 166649829720. Its totient is φ = 18666070272.

The previous prime is 55998221131. The next prime is 55998221189. The reversal of 55998221184 is 48112289955.

55998221184 is a `hidden beast` number, since 559 + 9 + 8 + 2 + 2 + 1 + 1 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 55998221184.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55998221189) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2690164 + ... + 2710899.

Almost surely, 2^55998221184 is an apocalyptic number.

55998221184 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

55998221184 is an abundant number, since it is smaller than the sum of its proper divisors (110651608536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55998221184 is an equidigital number, since it uses as much as digits as its factorization.

55998221184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5401089 (or 5401068 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 54.

The spelling of 55998221184 in words is "fifty-five billion, nine hundred ninety-eight million, two hundred twenty-one thousand, one hundred eighty-four".